pianissimo

adv. very softly, very quietly (Music)

In music, dynamics normally refers to the softness or loudness of a sound or note, but also to every aspect of the execution of a given piece, either stylistic (staccato, legato etc.) or functional (velocity). The term is also applied to the written or printed musical notation used to indicate dynamics.
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Noun
1. (music) low loudness
(synonym) piano
(hypernym) softness
(classification) music
Adjective
1. chiefly a direction or description in music; very soft
(similar) piano, soft
Adverb
1. a direction in music; to be played very softly
(synonym) very softly
(antonym) fortissimo, very loudly

n. pp, pianissimo; musical passage or composition that is played very softly (Music)

adv. pianissimo, very softly, very quietly (Music)

n. pianissimo, very quietly (Music)